Combined safety-catch or door-check.



4 J. G. CROSSKILL.

GOMBINED SAFETY GATOH 0R DOOR OHL'OK. APPLICATION FILED AUG. 31, 1000.

990,1 14, Patented Apr. 18, 1911.

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UNITED STATES PATENT OFFICE.

JOSEPH GORDON CROSSKILL, 01? DENVER, COLORADO.

COMBINED SAFETY-CATCH 0R DOOR-CHECK.

To all whom it may concern:

Be it known that I, JOSEPH Gr. CRossKiLL, a citizen of the UnitedStates, residing in the city and county of Denver and State of Colorado,have invented certain new and useful Improvements in Combined Safety-Catches or Door-Checks; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being bad to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

My invention relates to combined safety catch or door checks.

As a safety catch itis employed for automatically catching and retainingdoors in the open posit-ion. It is equally well adapted for performingthis function in connection with doors whether they swing upon hingeshaving vertically disposed axes or whether they are of the constructionand arrangement ordinarily known as trap doors and having the axes oftheir hinges horizontally or otherwise disposed. \Vhere used inconnection with a door, the latter is equipped with a plate having aring provided with a projection through which the pivot pin passes, thesaid projection extending beyond the pin and adapted to be engagedbeyond the pin by a lip or projection carried by the catch whereby theengagement of the lip with the projection of the ring causes the ring toengage the catch, which is constructed to prevent the escape of the ringexcept by design. The catch is so formed that it also serves forretaining the ring of a horse hitching strap when the same is placedthereon.

Having briefly outlined my improved construction I will proceed todescribe the same in detail, reference being made to the accompanyingdrawing in which is illustrated an embodiment thereof.

In this drawing: Figure 1 illustrates my improved device showing thewall equipped with my improved safety catch and the adj acent doorprovided with the cooperating and automatically engaging ring. Fig. 2 isa section taken through the door and the wall showing my improvement inposition where the ring is about to enter the catch, the ring, however,being shown by dotted lines in the position where it is interlocked withthe Specification of Letters Patent.

Application filed August 31, 1909.

Patented Apr. 18, 1911.

Serial No. 515,543.

catch, the door in this event being drawn outwardly from the wall ashort distance as also indicated by dotted lines.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate my improved safety catch considered in itsentirety. This catch consists of a base plate 6 adapted to be secured tothe wall or other suitable support by fastening devices as nails orscrews. This plate is provided with a pin 7 projecting forwardly fromthe lower part thereof. This pin is equipped near its outer extremitywith an upright hook 8 consisting of a vertical shank 9, bent at the topas shown at 10 to form a hook 12, which projects downwardly toward atongue 13 which is mounted on the plate and extends downwardly from theupper part thereof and forwardly as shown at 1 1, its outer extremityterminating a short distance below the hook 12, a space 15, however,being left between the hook and the outer extremity of the tongue, toallow the ring 16 carried by the door to enter, there being a verticalspace 17 between the tongue and the hook, through which the ring 16passes before reaching the space 15. The forward extremity 141 of thetongue, extends a sufficient distance above the pin 7 to allow the ringafter entering the catch, to move back and forth below the tongue which,however, taken in connection with the hook prevents the escape of thering from the catch except by design.

As illustrated in the drawing the ring 16 when in its normal position,occupies a shallow chamber 18 formed in the face of a plate 19 securedto the door 20 by means of screws 21 or other suitable fasteningdevices. The lower part of the plate 16 is offset into the door as shownat 22, forming a bottom recess 23 which is relatively deep, for thepurpose of receiving a depending projection 24. formed integral with thering 16 and extending below the pivot 25 of the ring. This projection 24is so located that when the door is swung open to the required distance,a forward projection or lip 26, engages the projection 24.- of the ringand causes the latter to swing rearwardly over the hook 8, after whichit falls by gravity downwardly to engagement with the pin 7 forward ofthe upright shank of the hook.

From the foregoing description it will be understood that in order thatthe door may be automatically caught and retained in the open position,it is only necessary to open it far enough to allow the forwardlyprojecting lip 26 of the catch to strike the depending member 24L of thepivoted ring 16, in order to cause the said ring to automatically passover the hook 8 and assume the interlocking relation with the catch.

Having thus described my invention, what I claim is:

1. The combination with a door and a walladjacent the door, of a ringpivotally connected with the door and having a part extendingabelow thepivot, the door having a recess to allow the depending part of the ringto enter, and a catch mounted on the wall and consisting of an outwardlyprojecting pinand a vertical hook mounted on the pin in the rear of itsouter extremity, the latter being adapted to engage the projection ofthe ring, whereby the latter is caused to engage the hook, substantiallyas described.

2. The combination with a. door and a wall adjacent the door, of a doorplate having a ring pivotally mounted thereon, and having a projectionextending below the pivot, the said plate having a shallow chamberadapted to receive the body portion of the ring and a relatively deeprecess adapted to receive the projection of the ring, and a catchmounted on the wall and comprising a plate having a forwardly projectingpin provided with an upwardly projecting hook mounted thereon, the pinhaving a. portion projecting forward from the hook and adapted to engagethe projection of the ring, and a cooperating tongue projectingoutwardly from the wall plate and cooperating with the hook for safetypurposes, substantially as described.

8. The combination with a part mounted to swing on an axis, and astationary part adjacent thereto, of a ring member pivotally connectedwith the part mounted to swing 011 an axis, and having a memberextending below the pivot, a catch mounted on the stationary part,consisting of a pin, and a hook mounted on the pin intermediate itsextremities, the pin being adapted to engage the part of the lockingmember extending below the pivot, whereby the lock- I ing member iscaused to engage the hook.

4. The combination with a door and a wall adjacent the door, of a ringpivotally mounted on the door and having a projection extending belowthe pivot, a catch mounted on the wall comprising a forwardly projectingpin, provided with an upwardly projecting hooked member, the pin havinga. portion projecting forward from the hook and adapted to engage theprojection of the ring when the door is swung to the open position,whereby the ring is tilted outwardly into engagement with the hook.

5. The combination of a part mounted to swing on an axis and astationary part adjacent thereto, of a ring member pivotally connectedwith the part mounted to swing on an axis, and having a member extendingbelow the pivot, and means mounted on the stationary part adapted tocome into engagement with the part of the ring member extending belowthe pivot for actuating the ring member, when the part mounted to swingis swung to engagement therewith, and means also mounted on thestationary part and adapted to interlock with the said ring member,substantially as described.

JOSEPH GORDON CROSSKILL. /Vitnesses WILLIS Bowns, VVArsoN E. Bowns.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

